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gerrit-public.fairphone.software / kernel / msm-4.9 / 8cfb879d1b118e190bf9aea1b50da62c0d8a4a77 / . / include / linux / of_iommu.h
blob: ffbe4707d4aa82f4ac898c6d0ca214d6a8227805 [file] [log] [blame]
Hiroshi Doyu4e0ee782012-06-25 14:23:54 +0300[diff] [blame]1#ifndef __OF_IOMMU_H
2#define __OF_IOMMU_H
3
Will Deacon7eba1d52014-08-27 16:20:32 +0100[diff] [blame]4#include <linux/device.h>
Will Deacon1cd076b2014-08-27 14:40:58 +0100[diff] [blame]5#include <linux/iommu.h>
6#include <linux/of.h>
7
Hiroshi Doyu4e0ee782012-06-25 14:23:54 +0300[diff] [blame]8#ifdef CONFIG_OF_IOMMU
9
10extern int of_get_dma_window(struct device_node *dn, const char *prefix,
11 int index, unsigned long *busno, dma_addr_t *addr,
12 size_t *size);
13
Will Deacon1cd076b2014-08-27 14:40:58 +0100[diff] [blame]14extern void of_iommu_init(void);
Murali Karicheried748622015-03-03 12:52:08 -0500[diff] [blame]15extern struct iommu_ops *of_iommu_configure(struct device *dev,
16 struct device_node *master_np);
Will Deacon1cd076b2014-08-27 14:40:58 +0100[diff] [blame]17
Hiroshi Doyu4e0ee782012-06-25 14:23:54 +0300[diff] [blame]18#else
19
20static inline int of_get_dma_window(struct device_node *dn, const char *prefix,
21 int index, unsigned long *busno, dma_addr_t *addr,
22 size_t *size)
23{
24 return -EINVAL;
25}
26
Will Deacon1cd076b2014-08-27 14:40:58 +0100[diff] [blame]27static inline void of_iommu_init(void) { }
Murali Karicheried748622015-03-03 12:52:08 -0500[diff] [blame]28static inline struct iommu_ops *of_iommu_configure(struct device *dev,
29 struct device_node *master_np)
Will Deacon7eba1d52014-08-27 16:20:32 +0100[diff] [blame]30{
31 return NULL;
32}
Will Deacon1cd076b2014-08-27 14:40:58 +0100[diff] [blame]33
Hiroshi Doyu4e0ee782012-06-25 14:23:54 +0300[diff] [blame]34#endif /* CONFIG_OF_IOMMU */
35
Robin Murphya42a7a12014-12-05 13:41:02 +0000[diff] [blame]36void of_iommu_set_ops(struct device_node *np, struct iommu_ops *ops);
37struct iommu_ops *of_iommu_get_ops(struct device_node *np);
Will Deacon1cd076b2014-08-27 14:40:58 +0100[diff] [blame]38
39extern struct of_device_id __iommu_of_table;
40
41typedef int (*of_iommu_init_fn)(struct device_node *);
42
43#define IOMMU_OF_DECLARE(name, compat, fn) \
44 _OF_DECLARE(iommu, name, compat, fn, of_iommu_init_fn)
45
Hiroshi Doyu4e0ee782012-06-25 14:23:54 +0300[diff] [blame]46#endif /* __OF_IOMMU_H */